biocompatible CP-AFM Zagreb FM-KPFM dielectric_trench Plug Pattern Oxide Dimethicone PatternedSapphireSubstrat PVAP3HT Scanning_Thermal_Microscopy mechanical property Vanadate ForceVolumeImage chemical_compound WWafer Piezo MESA structure Jason InorganicCompound organic_polymer Barium_titanate Alkane SingleLayer Pyroelectric Polyvinylidene_fluoride doped LogAmplifier conductive Aggregated_molecules ChemicalCompound Battery Piezoresponse polymeric_arrays